In-facepiece dust concentration is changed dozens of times in a matter of minutes due to changes of the size of the gaps between the mask and face. Source. A respirator is a device designed to protect the wearer from inhaling particulate matter, including airborne microrganisms, fumes, vapors, i.e. gases.
Why join Brainly? A community for students. Products of the neolithic culture Steel plows Boats with sails Domesticated dogs Wild figs. the answer would mostly likely be referring to things that actually were of use to the neolithic people and agriculture was the biggest thing making the answer steel plow. anonymous.
Click here to read The latest news about Stone Age Tools. Neolithic stone tools. The Neolithic period began around 6,000 years ago when humans first settled down and began farming.They continued to make tools and weapons from flint and some kinds of tool, such as scrapers for preparing hides, stayed the same.But the Neolithic also saw the introduction of new kinds of stone tool.First there was a movement away from using microliths to make spears and arrows as composite weapons and instead the universal adoption of flint arrow heads.lick here to read The latest news about Stone Age Tools. Neolithic stone tools. The Neolithic period began around 6,000 years ago when humans first settled down and began farming.